Newly mature adult female brownish yellow with 1 pair of purple stripes on sublateral area of dorsum; older females purple. Crystalline rods noticeable along body margin only. Felted ovisac white, enclosing adult female and up to 207 eggs. Occurring on foliage of host.
This species was not intercepted at U. S. ports-of-entry between 1995 and 2012, but it had been intercepted at least 5 times before that. We have examined specimens taken in quarantine from Argentina, Azores, Bermuda, Guatemala, Italy, Mexico and Spain all from Araucaria. ScaleNet includes hosts in 5 plant families from all zoogeographic regions. No species of Acanthococcus other than A. araucariae, A. coccineus (Cockerell), and A. dubius (Cockerell) have been intercepted at a U. S. port-of-entry.